123 lines
3.8 KiB
C
123 lines
3.8 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2009-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/*******************************************************************************
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*
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* Filename: btif_pan_internal.h
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*
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* Description: Bluetooth pan internal
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*
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*******************************************************************************/
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#ifndef BTIF_PAN_INTERNAL_H
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#define BTIF_PAN_INTERNAL_H
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#include "btif_pan.h"
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#include "bt_types.h"
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/*******************************************************************************
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** Constants & Macros
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********************************************************************************/
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#define PAN_NAP_SERVICE_NAME "Android Network Access Point"
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#define PANU_SERVICE_NAME "Android Network User"
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#define TAP_IF_NAME "bt-pan"
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#define ETH_ADDR_LEN 6
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#define TAP_MAX_PKT_WRITE_LEN 2000
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#ifndef PAN_SECURITY
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#define PAN_SECURITY (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | BTM_SEC_OUT_ENCRYPT)
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#endif
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#define PAN_STATE_UNKNOWN 0
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#define PAN_STATE_OPEN 1
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#define PAN_STATE_CLOSE 2
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#ifndef PAN_ROLE_INACTIVE
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#define PAN_ROLE_INACTIVE 0
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#endif
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/*******************************************************************************
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** Type definitions and return values
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********************************************************************************/
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typedef struct eth_hdr
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{
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unsigned char h_dest[ETH_ADDR_LEN];
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unsigned char h_src[ETH_ADDR_LEN];
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short h_proto;
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} tETH_HDR;
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typedef struct
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{
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int handle;
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int state;
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UINT16 protocol;
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BD_ADDR peer;
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int local_role;
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int remote_role;
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unsigned char eth_addr[ETH_ADDR_LEN];
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} btpan_conn_t;
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typedef struct
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{
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int btl_if_handle;
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int btl_if_handle_panu;
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int tap_fd;
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int enabled;
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int open_count;
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int flow; // 1: outbound data flow on; 0: outbound data flow off
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btpan_conn_t conns[MAX_PAN_CONNS];
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int congest_packet_size;
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unsigned char congest_packet[1600]; //max ethernet packet size
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} btpan_cb_t;
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/*******************************************************************************
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** Functions
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********************************************************************************/
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extern btpan_cb_t btpan_cb;
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btpan_conn_t *btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int peer_role);
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btpan_conn_t *btpan_find_conn_addr(const BD_ADDR addr);
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btpan_conn_t *btpan_find_conn_handle(UINT16 handle);
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void btpan_set_flow_control(BOOLEAN enable);
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int btpan_get_connected_count(void);
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int btpan_tap_open(void);
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void create_tap_read_thread(int tap_fd);
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void destroy_tap_read_thread(void);
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int btpan_tap_close(int tap_fd);
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int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 protocol,
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const char* buff, UINT16 size, BOOLEAN ext, BOOLEAN forward);
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static inline int is_empty_eth_addr(const BD_ADDR addr)
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{
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int i;
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for(i = 0; i < BD_ADDR_LEN; i++)
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if(addr[i] != 0)
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return 0;
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return 1;
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}
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static inline int is_valid_bt_eth_addr(const BD_ADDR addr)
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{
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if(is_empty_eth_addr(addr))
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return 0;
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return addr[0] & 1 ? 0 : 1; /* Cannot be multicasting address */
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}
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#endif
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